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compiler\parser.nim

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implemented arrow like operators
This commit is contained in:
Araq 2014-12-08 08:56:04 +01:00
commit 2804c0373c
2 changed files with 36 additions and 37 deletions
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23
doc/grammar.txt
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@ -4,7 +4,7 @@ semicolon = ';' COMMENT?
colon = ':' COMMENT?
colcom = ':' COMMENT?
operator = OP0 | OP1 | OP2 | OP3 | OP4 | OP5 | OP6 | OP7 | OP8 | OP9
operator = OP0 | OP1 | OP2 | OP3 | OP4 | OP5 | OP6 | OP7 | OP8 | OP9 | OP10
| 'or' | 'xor' | 'and'
| 'is' | 'isnot' | 'in' | 'notin' | 'of'
| 'div' | 'mod' | 'shl' | 'shr' | 'not' | 'addr' | 'static' | '..'
@ -14,16 +14,17 @@ prefixOperator = operator
optInd = COMMENT?
optPar = (IND{>} | IND{=})?
simpleExpr = assignExpr (OP0 optInd assignExpr)*
assignExpr = orExpr (OP1 optInd orExpr)*
orExpr = andExpr (OP2 optInd andExpr)*
andExpr = cmpExpr (OP3 optInd cmpExpr)*
cmpExpr = sliceExpr (OP4 optInd sliceExpr)*
sliceExpr = ampExpr (OP5 optInd ampExpr)*
ampExpr = plusExpr (OP6 optInd plusExpr)*
plusExpr = mulExpr (OP7 optInd mulExpr)*
mulExpr = dollarExpr (OP8 optInd dollarExpr)*
dollarExpr = primary (OP9 optInd primary)*
simpleExpr = arrowExpr (OP0 optInd arrowExpr)*
arrowExpr = assignExpr (OP1 optInd assignExpr)*
assignExpr = orExpr (OP2 optInd orExpr)*
orExpr = andExpr (OP3 optInd andExpr)*
andExpr = cmpExpr (OP4 optInd cmpExpr)*
cmpExpr = sliceExpr (OP5 optInd sliceExpr)*
sliceExpr = ampExpr (OP6 optInd ampExpr)*
ampExpr = plusExpr (OP7 optInd plusExpr)*
plusExpr = mulExpr (OP8 optInd mulExpr)*
mulExpr = dollarExpr (OP9 optInd dollarExpr)*
dollarExpr = primary (OP10 optInd primary)*
symbol = '`' (KEYW|IDENT|literal|(operator|'('|')'|'['|']'|'{'|'}'|'=')+)+ '`'
| IDENT
indexExpr = expr